EPN-110DN, Installation Instructions 4189340132 UK

8/19/2019 EPN-110DN, Installation Instructions 4189340132 UK

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DEIF A/S Tel: (+45) 9614 9614 Frisenborgvej 33, DK-7800 Skive Fax: (+45) 9614 9615 Denmark E-mail: [email protected]

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Installation and start up instructions

Electronic potentiometer type EPN-110DN uni-line 4189340132G (UK)

• Control of electronic governors

• Setting of integrating time

• Adjustment of output signal

• Offset adjustment

• LED indication for activated input

• 35 mm DIN rail or base mounting


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Distributor’s ID No.Filled in by distributorwhen customizing the unit.

Supply voltage

Type designation DEIF’s order ack. No.To be stated when contacting DEIF

Highest voltagein relation to earth.

Installation category

(E.g. special calibration of output)

1. Description

This electronic potentiometer type EPN-110DN forms part of a complete DEIF series (theuni-line ) of relays for protection and control of generators.

The EPN-110DN is an electronic unit to replace normal motor potentiometers, convertingthe relay output of a PI step controller – e.g. one of the DEIF load sharing units type LSU…or one of the DEIF synchronisers type FAS…, or any other type of PI step controllerprovided with relay outputs – to a control voltage for the speed governor/AVR.

2. LabelThe potentiometer is provided with a label with the following data:

3. Mounting instructions

The EPN-110DN is designed for panel mounting.

It may, however, be mounted ina 35 mm DIN rail by means oftwo 4-mm screws.

Weight: Approx. 0.650 kg

The design of the potentiometermakes mounting of it close toother uni-line units possible,however make sure there aremin. 50 mm between the top

and bottom of this relay and other relays/units. The DIN rail must always be placedhorizontally when several relays are mounted on the same rail.


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Installation and start up instructions EPN-110DND

4189340132G (UK)

4. Connection diagramA 2A fuse may protect the auxiliary supplyconnection.

The potentiometer is protected against ESD(electrostatic electricity), and further specialprotection against this during the mounting ofthe potentiometer is not necessary.

Terminals Nos. 16 + 18 + 20 are internallyconnected to each other.

The EPN-110DN may be connected tospeed governors/AVR’s designed for 2 or 3-point connection of the externalpotentiometer.

For 3 point connections mounting thenormally applied external potentiometer isrecommended, and then to connect theEPN-110DN in series with the wiper of thepotentiometer for the speed governor/AVR.

On activation of Relay contact LED on the front

Input “∆”, “” is activated “” is lit

The relay contacts shown inthe above diagram arecoupled as normally de-energised contacts.

Input “∇”. “” is activated “” is lit

These 2 relay outputs may e.g. be applied for remote indication of activation of the “∆” and“∇” inputs.

5. Start up instructions

5.1 Setting and indication

Output signal: Potentiometer ”OUTPUT”The maximum and minimum change of the frequency/voltage of the connected speedgovernor/AVR, controlled by the EPN-110DN.Both “Volt” DIP switches set to x1: range –1…0…1VDC.“Volt” DIP switch x5 set to x5 and x10 set to x1: range –5…0…5VDC.“Volt” DIP switch x10 set to x10 and x5 set to x1: range –10…0…10VDC.The DIP switches are accessible from the front of the relay.

Integrating time: Potentiometer ”TIME”How quickly the output integrates from the minimum to the maximum setting (or vice versa).This setting thus determines how quickly e.g. a load sharing will be carried out.


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DIP switch ”Sec” set to ”1”: range 2.5 s… 25 s, set to ”x 10”: range 25…250 s. The DIPswitch is accessible from the front of the relay.

Offset: Potentiometer ”OFFSET” (range: -25…0…25% of output)The point where the control loop starts. This setting determines e.g. to which frequency thegenerator should be reset instantaneously during power-up or on activation of the reset

input.

LED Light“” (increase) Yellow, when relay is activated

“” (decrease) Yellow, when relay is activated

1. As a starting point set ”OUTPUT” potentiometer DIP switch mrk. “Volt” to “x 1” and the

scale to “1”, corresponding to a voltage output of ±1V.2. Set the potentiometer ”TIME” DIP switch ”Sec” to ”x 1” and scale to ”0”.3. Short-circuit terminals Nos. 18 and 19 (“”, increase), and check that the speed

governor/AVR increases the frequency/voltage of the generator.

If the frequency/voltage is decreased instead, the connection wires to terminals Nos. 23and 24 respectively are interchanged. Keep the connection terminals short-circuited formin 2.5 s!

A suitable control range should now have been obtained. If not:

4. Fine adjust the “OUTPUT” potentiometer (alternatively: set its DIP switches to “x 5” or to“x10”). To obtain a stable control, the setting of the “OUTPUT” potentiometer shouldensure that overcontrol of the connected speed governor/AVR will not occur. Whenconnecting the EPN-110DN to the speed governor/AVR, the normal set point of this willnormally be slightly changed, which may be corrected by adjusting the “OFFSET”potentiometer.

5. Set the DIP switch mrk. ”Sec” to ”x 10” and the ”TIME” potentiometer to ”12.5” (theapproximate scale centre), corresponding to an integrating time of 125 s.

The control system should then be tested under various load conditions.

If a shorter control time is required:6. Try reducing the integrating time (”TIME” potentiometer), until the control loop becomes

unstable, and then select a value at least twice the setting at which the control loopbecame unstable.To obtain a stable control, the ”TIME” potentiometer should be set to a longerintegrating time than the control time of the system (the diesel generator) itself.

6. Technical specificationsRelay inputs: Potential-free relay contacts. Open: 15V DC. Closed: 4mA.

Analog output: 0…± 1V DC (DIP switches set to “x 1”), or:

0…± 5V DC (DIP switches set to “x 5”), or:

0…±10VDC (DIP switches set to “x10”)

output resistance: 0…500Ω potentiometerOffset adjustment: -25…0…25% of outputRipple: Max. 5mV RMS.Resolution: 5mV DC (12-bit D/A converter)

Contact rating: 250V-8A-2000A (AC), 24V-8A-200W (DC)Response time: <100 m, input to outputGalv. separation: Supply voltage to other circuits, and relay outputs mutually and to other

circuits: 3250V-50Hz-1 min.Consumption: (Aux. supply) 3.5VA/2W

EPN-110DN, Installation Instructions 4189340132 UK

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